num是小于十位數(shù)
0*7ffffffff? 是這樣表達(dá)十位數(shù)么
慕姐1003813
2020-11-04
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2020-11-06
public?static?void?main(String[]?args)?{ ????String?value="1234567890"; ????Boolean?valuesIsTen?=?value.matches("\\d{10}"); ????if(valuesIsTen) ????????System.out.println("是十位數(shù)"); ????else ????????System.out.println("不是十位數(shù)"); }